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The Green Book directory is a directory of marketing research and focus group companies arranged alphabetically by company name and by special cross-reference indexes. Comprised of over 400 research categories, these indexes permit the listing companies to highlight the marketing research services they offer, the audiences they cover and the markets they serve. The companies listed in these indexes provide coverage ranging from internet/online, advertising, brand and media research, to specialization in major industries such as financial, healthcare, retail, technology and telecommunications.

A sister publication of GreenBook, GBHealth is where healthcare marketers find qualified healthcare market research providers. GBHealth offers information on more healthcare marketing firms than any other source. All types of healthcare marketers - whether pharmaceutical or medical device, hospital, homecare, long-term, or managed care - turn to GBHealth to discover new vendors, check up on vendors they’ve heard about, get price quotes, and more. Healthcare marketing firms with verified credentials and experience are highlighted through the GreenBook Health Reference Verification Program. Smart healthcare marketing services vendors use GBHealth to achieve highly visible, continuous, and targeted exposure. Being in the right place at the right time is crucial. That's where GBHealth can help.

And don't forget the new GreenBook Health! The marketing research directory specifically for heathcare market researchers.